Energy and centrality dependence of p̄ and p production and the Λ̄/p̄ ratio in Pb+Pb collisions between 20A GeV and 158A GeV

C. Alt, T. Anticic, B. Baatar, D. Barna, J. Bartke, L. Betev, H. Białkowska, C. Blume, B. Boimska, M. Botje, J. Bracinik, R. Bramm, P. Buncić, V. Cerny, P. Christakoglou, O. Chvala, J. G. Cramer, P. Csató, P. Dinkelaker, V. EckardtD. Flierl, Z. Fodor, P. Foka, V. Friese, J. Gál, M. Gaździcki, V. Genchev, G. Georgopoulos, E. Gładysz, K. Grebieszkow, S. Hegyi, C. Höhne, K. Kadija, A. Karev, M. Kliemant, S. Kniege, V. I. Kolesnikov, E. Kornas, R. Korus, M. Kowalski, I. Kraus, M. Kreps, A. Laslo, M. Van Leeuwen, P. Lévai, L. Litov, B. Lungwitz, M. Makariev, A. I. Malakhov, M. Mateev, G. L. Melkumov, A. Mischke, M. Mitrovski, J. Molnár, St Mrówczyński, V. Nicolic, G. Pálla, A. D. Panagiotou, D. Panayotov, A. Petridis, M. Pikna, D. Prindle, F. Pühlhofer, R. Renfordt, C. Roland, G. Roland, M. Rybczyński, A. Rybicki, A. Sandoval, N. Schmitz, T. Schuster, P. Seyboth, F. Siklér, B. Sitar, E. Skrzypczak, G. Stefanek, R. Stock, C. Strabel, H. Ströbele, T. Susa, I. Szentpétery, J. Sziklai, P. Szymanski, V. Trubnikov, D. Varga, M. Vassiliou, G. I. Veres, G. Vesztergombi, D. Vranić, A. Wetzler, Z. Włodarczyk, I. K. Yoo, J. Zimányi

Research output: Contribution to journalArticle

114 Citations (Scopus)

Abstract

The transverse mass mt distributions for antiprotons are measured at midrapidity for minimum bias Pb+Pb collisions at 158A GeV and for central Pb+Pb collisions at 20A, 30A, 40A, and 80A GeV beam energies in the fixed target experiment NA49 at the CERN SPS. The rapidity density dn/dy, inverse slope parameter T, and mean transverse mass mt derived from the mt distributions are studied as a function of the incident energy and the collision centrality and compared to the relevant data on proton production. The shapes of the mt distributions of p̄ and p are very similar. The ratios of the particle yields, p̄/p and Λ̄/p̄, are also analyzed. The p̄/p ratio exhibits an increase with decreasing centrality and a steep rise with increasing beam energy. The Λ̄/p̄ ratio increases beyond unity with decreasing beam energy.

Original languageEnglish
Article number044910
JournalPhysical Review C - Nuclear Physics
Volume73
Issue number4
DOIs
Publication statusPublished - 2006

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collisions
energy
antiprotons
mass distribution
unity
slopes
protons

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics

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Energy and centrality dependence of p̄ and p production and the Λ̄/p̄ ratio in Pb+Pb collisions between 20A GeV and 158A GeV. / Alt, C.; Anticic, T.; Baatar, B.; Barna, D.; Bartke, J.; Betev, L.; Białkowska, H.; Blume, C.; Boimska, B.; Botje, M.; Bracinik, J.; Bramm, R.; Buncić, P.; Cerny, V.; Christakoglou, P.; Chvala, O.; Cramer, J. G.; Csató, P.; Dinkelaker, P.; Eckardt, V.; Flierl, D.; Fodor, Z.; Foka, P.; Friese, V.; Gál, J.; Gaździcki, M.; Genchev, V.; Georgopoulos, G.; Gładysz, E.; Grebieszkow, K.; Hegyi, S.; Höhne, C.; Kadija, K.; Karev, A.; Kliemant, M.; Kniege, S.; Kolesnikov, V. I.; Kornas, E.; Korus, R.; Kowalski, M.; Kraus, I.; Kreps, M.; Laslo, A.; Leeuwen, M. Van; Lévai, P.; Litov, L.; Lungwitz, B.; Makariev, M.; Malakhov, A. I.; Mateev, M.; Melkumov, G. L.; Mischke, A.; Mitrovski, M.; Molnár, J.; Mrówczyński, St; Nicolic, V.; Pálla, G.; Panagiotou, A. D.; Panayotov, D.; Petridis, A.; Pikna, M.; Prindle, D.; Pühlhofer, F.; Renfordt, R.; Roland, C.; Roland, G.; Rybczyński, M.; Rybicki, A.; Sandoval, A.; Schmitz, N.; Schuster, T.; Seyboth, P.; Siklér, F.; Sitar, B.; Skrzypczak, E.; Stefanek, G.; Stock, R.; Strabel, C.; Ströbele, H.; Susa, T.; Szentpétery, I.; Sziklai, J.; Szymanski, P.; Trubnikov, V.; Varga, D.; Vassiliou, M.; Veres, G. I.; Vesztergombi, G.; Vranić, D.; Wetzler, A.; Włodarczyk, Z.; Yoo, I. K.; Zimányi, J.

In: Physical Review C - Nuclear Physics, Vol. 73, No. 4, 044910, 2006.

Research output: Contribution to journalArticle

Alt, C, Anticic, T, Baatar, B, Barna, D, Bartke, J, Betev, L, Białkowska, H, Blume, C, Boimska, B, Botje, M, Bracinik, J, Bramm, R, Buncić, P, Cerny, V, Christakoglou, P, Chvala, O, Cramer, JG, Csató, P, Dinkelaker, P, Eckardt, V, Flierl, D, Fodor, Z, Foka, P, Friese, V, Gál, J, Gaździcki, M, Genchev, V, Georgopoulos, G, Gładysz, E, Grebieszkow, K, Hegyi, S, Höhne, C, Kadija, K, Karev, A, Kliemant, M, Kniege, S, Kolesnikov, VI, Kornas, E, Korus, R, Kowalski, M, Kraus, I, Kreps, M, Laslo, A, Leeuwen, MV, Lévai, P, Litov, L, Lungwitz, B, Makariev, M, Malakhov, AI, Mateev, M, Melkumov, GL, Mischke, A, Mitrovski, M, Molnár, J, Mrówczyński, S, Nicolic, V, Pálla, G, Panagiotou, AD, Panayotov, D, Petridis, A, Pikna, M, Prindle, D, Pühlhofer, F, Renfordt, R, Roland, C, Roland, G, Rybczyński, M, Rybicki, A, Sandoval, A, Schmitz, N, Schuster, T, Seyboth, P, Siklér, F, Sitar, B, Skrzypczak, E, Stefanek, G, Stock, R, Strabel, C, Ströbele, H, Susa, T, Szentpétery, I, Sziklai, J, Szymanski, P, Trubnikov, V, Varga, D, Vassiliou, M, Veres, GI, Vesztergombi, G, Vranić, D, Wetzler, A, Włodarczyk, Z, Yoo, IK & Zimányi, J 2006, 'Energy and centrality dependence of p̄ and p production and the Λ̄/p̄ ratio in Pb+Pb collisions between 20A GeV and 158A GeV', Physical Review C - Nuclear Physics, vol. 73, no. 4, 044910. https://doi.org/10.1103/PhysRevC.73.044910
Alt, C. ; Anticic, T. ; Baatar, B. ; Barna, D. ; Bartke, J. ; Betev, L. ; Białkowska, H. ; Blume, C. ; Boimska, B. ; Botje, M. ; Bracinik, J. ; Bramm, R. ; Buncić, P. ; Cerny, V. ; Christakoglou, P. ; Chvala, O. ; Cramer, J. G. ; Csató, P. ; Dinkelaker, P. ; Eckardt, V. ; Flierl, D. ; Fodor, Z. ; Foka, P. ; Friese, V. ; Gál, J. ; Gaździcki, M. ; Genchev, V. ; Georgopoulos, G. ; Gładysz, E. ; Grebieszkow, K. ; Hegyi, S. ; Höhne, C. ; Kadija, K. ; Karev, A. ; Kliemant, M. ; Kniege, S. ; Kolesnikov, V. I. ; Kornas, E. ; Korus, R. ; Kowalski, M. ; Kraus, I. ; Kreps, M. ; Laslo, A. ; Leeuwen, M. Van ; Lévai, P. ; Litov, L. ; Lungwitz, B. ; Makariev, M. ; Malakhov, A. I. ; Mateev, M. ; Melkumov, G. L. ; Mischke, A. ; Mitrovski, M. ; Molnár, J. ; Mrówczyński, St ; Nicolic, V. ; Pálla, G. ; Panagiotou, A. D. ; Panayotov, D. ; Petridis, A. ; Pikna, M. ; Prindle, D. ; Pühlhofer, F. ; Renfordt, R. ; Roland, C. ; Roland, G. ; Rybczyński, M. ; Rybicki, A. ; Sandoval, A. ; Schmitz, N. ; Schuster, T. ; Seyboth, P. ; Siklér, F. ; Sitar, B. ; Skrzypczak, E. ; Stefanek, G. ; Stock, R. ; Strabel, C. ; Ströbele, H. ; Susa, T. ; Szentpétery, I. ; Sziklai, J. ; Szymanski, P. ; Trubnikov, V. ; Varga, D. ; Vassiliou, M. ; Veres, G. I. ; Vesztergombi, G. ; Vranić, D. ; Wetzler, A. ; Włodarczyk, Z. ; Yoo, I. K. ; Zimányi, J. / Energy and centrality dependence of p̄ and p production and the Λ̄/p̄ ratio in Pb+Pb collisions between 20A GeV and 158A GeV. In: Physical Review C - Nuclear Physics. 2006 ; Vol. 73, No. 4.
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title = "Energy and centrality dependence of p̄ and p production and the Λ̄/p̄ ratio in Pb+Pb collisions between 20A GeV and 158A GeV",
abstract = "The transverse mass mt distributions for antiprotons are measured at midrapidity for minimum bias Pb+Pb collisions at 158A GeV and for central Pb+Pb collisions at 20A, 30A, 40A, and 80A GeV beam energies in the fixed target experiment NA49 at the CERN SPS. The rapidity density dn/dy, inverse slope parameter T, and mean transverse mass mt derived from the mt distributions are studied as a function of the incident energy and the collision centrality and compared to the relevant data on proton production. The shapes of the mt distributions of p̄ and p are very similar. The ratios of the particle yields, p̄/p and Λ̄/p̄, are also analyzed. The p̄/p ratio exhibits an increase with decreasing centrality and a steep rise with increasing beam energy. The Λ̄/p̄ ratio increases beyond unity with decreasing beam energy.",
author = "C. Alt and T. Anticic and B. Baatar and D. Barna and J. Bartke and L. Betev and H. Białkowska and C. Blume and B. Boimska and M. Botje and J. Bracinik and R. Bramm and P. Buncić and V. Cerny and P. Christakoglou and O. Chvala and Cramer, {J. G.} and P. Csat{\'o} and P. Dinkelaker and V. Eckardt and D. Flierl and Z. Fodor and P. Foka and V. Friese and J. G{\'a}l and M. Gaździcki and V. Genchev and G. Georgopoulos and E. Gładysz and K. Grebieszkow and S. Hegyi and C. H{\"o}hne and K. Kadija and A. Karev and M. Kliemant and S. Kniege and Kolesnikov, {V. I.} and E. Kornas and R. Korus and M. Kowalski and I. Kraus and M. Kreps and A. Laslo and Leeuwen, {M. Van} and P. L{\'e}vai and L. Litov and B. Lungwitz and M. Makariev and Malakhov, {A. I.} and M. Mateev and Melkumov, {G. L.} and A. Mischke and M. Mitrovski and J. Moln{\'a}r and St Mr{\'o}wczyński and V. Nicolic and G. P{\'a}lla and Panagiotou, {A. D.} and D. Panayotov and A. Petridis and M. Pikna and D. Prindle and F. P{\"u}hlhofer and R. Renfordt and C. Roland and G. Roland and M. Rybczyński and A. Rybicki and A. Sandoval and N. Schmitz and T. Schuster and P. Seyboth and F. Sikl{\'e}r and B. Sitar and E. Skrzypczak and G. Stefanek and R. Stock and C. Strabel and H. Str{\"o}bele and T. Susa and I. Szentp{\'e}tery and J. Sziklai and P. Szymanski and V. Trubnikov and D. Varga and M. Vassiliou and Veres, {G. I.} and G. Vesztergombi and D. Vranić and A. Wetzler and Z. Włodarczyk and Yoo, {I. K.} and J. Zim{\'a}nyi",
year = "2006",
doi = "10.1103/PhysRevC.73.044910",
language = "English",
volume = "73",
journal = "Physical Review C - Nuclear Physics",
issn = "0556-2813",
publisher = "American Physical Society",
number = "4",

}

TY - JOUR

T1 - Energy and centrality dependence of p̄ and p production and the Λ̄/p̄ ratio in Pb+Pb collisions between 20A GeV and 158A GeV

AU - Alt, C.

AU - Anticic, T.

AU - Baatar, B.

AU - Barna, D.

AU - Bartke, J.

AU - Betev, L.

AU - Białkowska, H.

AU - Blume, C.

AU - Boimska, B.

AU - Botje, M.

AU - Bracinik, J.

AU - Bramm, R.

AU - Buncić, P.

AU - Cerny, V.

AU - Christakoglou, P.

AU - Chvala, O.

AU - Cramer, J. G.

AU - Csató, P.

AU - Dinkelaker, P.

AU - Eckardt, V.

AU - Flierl, D.

AU - Fodor, Z.

AU - Foka, P.

AU - Friese, V.

AU - Gál, J.

AU - Gaździcki, M.

AU - Genchev, V.

AU - Georgopoulos, G.

AU - Gładysz, E.

AU - Grebieszkow, K.

AU - Hegyi, S.

AU - Höhne, C.

AU - Kadija, K.

AU - Karev, A.

AU - Kliemant, M.

AU - Kniege, S.

AU - Kolesnikov, V. I.

AU - Kornas, E.

AU - Korus, R.

AU - Kowalski, M.

AU - Kraus, I.

AU - Kreps, M.

AU - Laslo, A.

AU - Leeuwen, M. Van

AU - Lévai, P.

AU - Litov, L.

AU - Lungwitz, B.

AU - Makariev, M.

AU - Malakhov, A. I.

AU - Mateev, M.

AU - Melkumov, G. L.

AU - Mischke, A.

AU - Mitrovski, M.

AU - Molnár, J.

AU - Mrówczyński, St

AU - Nicolic, V.

AU - Pálla, G.

AU - Panagiotou, A. D.

AU - Panayotov, D.

AU - Petridis, A.

AU - Pikna, M.

AU - Prindle, D.

AU - Pühlhofer, F.

AU - Renfordt, R.

AU - Roland, C.

AU - Roland, G.

AU - Rybczyński, M.

AU - Rybicki, A.

AU - Sandoval, A.

AU - Schmitz, N.

AU - Schuster, T.

AU - Seyboth, P.

AU - Siklér, F.

AU - Sitar, B.

AU - Skrzypczak, E.

AU - Stefanek, G.

AU - Stock, R.

AU - Strabel, C.

AU - Ströbele, H.

AU - Susa, T.

AU - Szentpétery, I.

AU - Sziklai, J.

AU - Szymanski, P.

AU - Trubnikov, V.

AU - Varga, D.

AU - Vassiliou, M.

AU - Veres, G. I.

AU - Vesztergombi, G.

AU - Vranić, D.

AU - Wetzler, A.

AU - Włodarczyk, Z.

AU - Yoo, I. K.

AU - Zimányi, J.

PY - 2006

Y1 - 2006

N2 - The transverse mass mt distributions for antiprotons are measured at midrapidity for minimum bias Pb+Pb collisions at 158A GeV and for central Pb+Pb collisions at 20A, 30A, 40A, and 80A GeV beam energies in the fixed target experiment NA49 at the CERN SPS. The rapidity density dn/dy, inverse slope parameter T, and mean transverse mass mt derived from the mt distributions are studied as a function of the incident energy and the collision centrality and compared to the relevant data on proton production. The shapes of the mt distributions of p̄ and p are very similar. The ratios of the particle yields, p̄/p and Λ̄/p̄, are also analyzed. The p̄/p ratio exhibits an increase with decreasing centrality and a steep rise with increasing beam energy. The Λ̄/p̄ ratio increases beyond unity with decreasing beam energy.

AB - The transverse mass mt distributions for antiprotons are measured at midrapidity for minimum bias Pb+Pb collisions at 158A GeV and for central Pb+Pb collisions at 20A, 30A, 40A, and 80A GeV beam energies in the fixed target experiment NA49 at the CERN SPS. The rapidity density dn/dy, inverse slope parameter T, and mean transverse mass mt derived from the mt distributions are studied as a function of the incident energy and the collision centrality and compared to the relevant data on proton production. The shapes of the mt distributions of p̄ and p are very similar. The ratios of the particle yields, p̄/p and Λ̄/p̄, are also analyzed. The p̄/p ratio exhibits an increase with decreasing centrality and a steep rise with increasing beam energy. The Λ̄/p̄ ratio increases beyond unity with decreasing beam energy.

UR - http://www.scopus.com/inward/record.url?scp=33646240161&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33646240161&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.73.044910

DO - 10.1103/PhysRevC.73.044910

M3 - Article

AN - SCOPUS:33646240161

VL - 73

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

SN - 0556-2813

IS - 4

M1 - 044910

ER -